Keyless Remote Problem
 

2002 Blazer, 4 door. Interior lights remain on, only way to turn it off is to push in the interior switch by headlight panel. Keyless remote will unlock car, but when I try and lock nothing happens after I press it a second time the horn beeps. When I try and lock using the button on the drivers door panel all the doors lock, but the drivers slide switch locks then unlocks. When I put it in drive usually the doors lock and they don't, when I put it in park the doors unlock. I've blown two 3 amp fuses so far. Is there a relay somewhere under the steering column, I hear something click when I hit the remote? Could the relay be bad?